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At an archery tournament, eight of the twenty competitors were left-ha
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06 Oct 2021, 09:17
06 Oct 2021, 09:17
Expert Reply
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Question Stats:
70% (01:41) correct
30% (01:13) wrong based on 10 sessions
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At an archery tournament, eight of the twenty competitors were left-handed and the remainders were right-handed. Due to the weather conditions it is more difficult for left-handers to hit the target. Practice sessions indicated that the probability of a left-hander hitting the target was 0.7, while for right-hander it was 0.9. What is the probability that an archer chosen at random is left-handed and hits the target?
A. 41/50
B. 27/41
C. 3359/9500
D. 37/100
E. 7/25
A. 41/50
B. 27/41
C. 3359/9500
D. 37/100
E. 7/25
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Re: At an archery tournament, eight of the twenty competitors were left-ha
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06 Oct 2021, 09:31
06 Oct 2021, 09:31
Carcass wrote:
At an archery tournament, eight of the twenty competitors were left-handed and the remainders were right-handed. Due to the weather conditions it is more difficult for left-handers to hit the target. Practice sessions indicated that the probability of a left-hander hitting the target was 0.7, while for right-hander it was 0.9. What is the probability that an archer chosen at random is left-handed and hits the target?
A. 41/50
B. 27/41
C. 3359/9500
D. 37/100
E. 7/25
A. 41/50
B. 27/41
C. 3359/9500
D. 37/100
E. 7/25
P(left-handed AND hits target) = P(left-handed) x P(hits target)
= 8/20 x 0.7
= 8/20 x 7/10
= 56/200
= 7/25
Answer: E
gmatclubot
Re: At an archery tournament, eight of the twenty competitors were left-ha [#permalink]
06 Oct 2021, 09:31
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